| Patents for C01G 3 - Compounds of copper (3,934) |
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| 04/26/1977 | US4020081 Certain benzoxazoles and the use thereof as metal extractants |
| 04/19/1977 | US4018866 Metal carbonate recycle to reduction circuit in the cuprion process |
| 04/05/1977 | US4016056 Lixiviation with cupric chloride, extraction, oxidation, sulfation, electrolysis |
| 03/22/1977 | US4013457 Process for the recovery of cuprous chloride in the presence of metal impurities |
| 03/01/1977 | US4010099 Settlers for copper liquid extraction systems |
| 02/15/1977 | US4008134 Extraction and separation of metals from solids using liquid cation exchangers |
| 02/15/1977 | US4008076 Hydrometallurgy |
| 01/25/1977 | US4005174 Process for the elimination of chloride from zinc sulphate solutions |
| 01/25/1977 | US4005173 Steam stripping of ammoniacal solutions and simultaneous loading of metal values by organic acids |
| 01/18/1977 | US4003975 Solvent extraction of copper values using dihydroxy azoarenes |
| 01/11/1977 | US4002577 Copper carbonyl-containing catalytic solutions |
| 12/21/1976 | US3998924 Recovery of non-ferrous metals from acidic liquors with a chelate exchange resin in presence of iron(III) |
| 11/09/1976 | US3990891 Aluminum halides |
| 10/26/1976 | US3988417 With dichlorodisulfide or dichloroethane |
| 09/21/1976 | US3981966 Zinc recovery from acidic aqueous streams |
| 08/17/1976 | US3975284 Process for the manufacture of solutions of halogens |
| 08/03/1976 | US3972711 Cuprous chloride recovery process |
| 07/06/1976 | US3968050 Oxidation of molten salts and recovery of chlorine values |
| 06/29/1976 | US3966890 Method of producing solutions containing cuprous ions |
| 06/29/1976 | US3966462 Recovery of nitric acid soluble transition metals from sulfur and iron containing ores of the same |
| 06/08/1976 | US3962402 Extraction of copper as copper sulfate |
| 06/01/1976 | US3961028 Method of producing cuprous sulfate and bisulfate solutions |
| 05/25/1976 | US3959436 Process for leaching sulfide minerals |
| 05/18/1976 | US3957504 Metals, chelate compounds |
| 05/11/1976 | US3956475 Complexing copper salt with ammonia, decomposition with alkali metal hydroxide |
| 05/04/1976 | US3954936 O-nitrosophenols as extractants for metal values |
| 04/20/1976 | US3951649 Leaching with ferric chloride, ion exchanging with sulfuric acid, hydrometallurical reduction |
| 04/13/1976 | US3950488 Ion exchanging |
| 04/13/1976 | US3950487 Solvent-in-pulp extraction of copper and nickel from ammoniacal leach slurries |
| 04/13/1976 | US3950486 Method for separating metal constituents from ocean floor nodules |
| 03/30/1976 | US3947543 Process for recovering copper and noble metals from organic residues |
| 02/17/1976 | US3939203 Certain substituted 2-hydroxybenzophenoximes and the process of extracting copper therewith |
| 02/10/1976 | US3937657 Disproportionation of cuprous salts |
| 01/13/1976 | US3932291 Copper aluminum sulfide |